Henk

  • phoph pebble

    I have lots of ideas for phoph but want to start where I left of in 2017. A hybrid tube amp, low power, just enough to drive a couple of shelf speakers. I will use this to experiment with the phoph design concepts. Tell the story of the electronics of the amplify through its physical…

  • K7 radio receiver

    although the LEAR Amplifier was the start of phoph like design, my journey in audio started long before, and even before then. One of those old men’s story so feel free to skip. although I need to take you back to 1987 when I worked for Electronics Australia magazine in Sydney, the real story starts…

  • The LEAR Amp

    in 2017 I designed the LEAR Amp. A small tube amplifier built in two parts, a power supply and the amplifier itself. The name is a tribute to the Low Energy Antiproton Ring (LEAR) at CERN. I designed a series of 250A bipolar power supplies for the accelerator and later operated the machine for almost…